Gas burner



Oc. 18, 1932. c. M. DIBBLE GAS BURNER Filed Aug. 4, 1928 Patented Oct.18, 1932 y UNITED vSTATES PATENT OFFICE CLAUDE M. DIBBLE, F JOIIET,ILLINOIS, ASSIGNOR T0 MOORE BROTHERS COMPANY,

0F JOLIET, ILLINOIS, ACORPOBATION OF ILLINOIS GAS BURNER Applicationled'Aug'ust 4, 1923. Serial No. 297,459.

This invention relates to gaseous fuel burners and has for its generalobject to provide a burner of compact construction in which efficiencyin operation is promoted and the heating capacity is enlarged in respectof the area of flame propagation.'

Numerous other objectsk and advanta es of the invention will be apparentas it is etter understood from the following description, which, takenin connection with the accompanying drawin discloses a preferredembodiment thereo ln the drawing:

Figure 1 is a plan view of a gaseous fuel burner of one type constructedin accordance withthe invention;

' Fig. 2 is a vertical sectional elevation on an enlarged scale of theinlet end of 'the burner;

Fig. 3 is a horizon-tal section taken on the line 3-3 of Fig. 2; l

Fig. 4`is a transversevertical section taken on the line 4-4 of Fig. 3;4

/ Fig. -5 is another transverse vertical section `taken on the line 5 5of Fig. 3, and

Fig. 6 is a transverse vertical section taken zontally elongated body 12o generally rectangular shape in cross section. The inlet end 13 of theburner body is"frmed with a v head 14. the outer surface'15 of which maybe cylindrical in shape and provided with' clamping projections 16 forthe pur ose of securing the burner body to thewall o va suitable heatingchamber, as for exam le is disclosed in my companion applicatlon SerialNo. 297,458 for Letters Patent of the United States'for stoveconstructions, filed of even dateherewith, whichhas resulted in PatentNo..1,822,274, issued September 8, 1931.

The head- 14-as shown, is concentrically positioned on the inlet end 13of the burner body and the rear part of the' head merges into acup-shaped portion 17, the walls of which converge into the constrictedpart 18 of a Venturi tube 19. The Venturi tube 19 islocatedconcentricallyv in respect of the longitudinal axis' ofthe burner. bodyand constriction 25, inthe direction of theiiow, .and from thisconstriction 25,- diverges because ,of the conical bore v26 toward theVenvIturi outlet 2l.

The illustrative burner `may be o erated on the Bunsen burner principle,and or this purpose, the outer face of the head 14 is provided with aclosure wall 27 provided with openings 28 for the ingress of air. Theclosure wall 27 is provided witha central opening 29 to receive the pipe30 which discharges the gaseous fuel into the cup-shaped inlet portion24 of the Venturi tube. Mounted on the outer face of the closure wall 27is adisc 31 also provided with a central opening 32 for the gas pipe30,' .and with an inwardly projecting flange 33 which surrounds the'gaspipe, as shown in Fig. 2. The disc 31 is provided with air inlets 34,companion to inlets 28 of the closure wail 27, and, by rotating the discrelatively to the closure plate, the registration of the companioninlets 34 and 28 may -be varied to regulate the quantity of airintroduced into the Venturi tube along with the gaseous fuel. A nut 35threaded at 36 on-the gas pipe 30 may be tightened against the outerface 4of the disc 31 to-retain the latter inadjusted position.

The gas pipe 30 may be provided with a valve 37 of an preferredconstruction for controllin t e supply of gas to the Venturi tube of theurner, and the gaseous fuel may be obtained from any suitable source ofsupply 24, the gaseous fuel and air pass through the constriction 25 inwhich its velocity is augmented and continue with gradually decreasingvelocity through the diverging conical bore 26 of the tube to theVenturi outlet 21.

-At this outlet 21, the mixture of fuel and air is delivered to thechambers or passageways in the main body portion of the burner. As thegaseous fuel and air pass through the Venturi tube, its velocity is'rstrapidly increased, which of course is accompanied by a decrease inpressure, and next, the velocity of the gases is gradually decreased asthe dow progresses toward the outlet 21 of the tube. The decrease invelocity caused by the diverging conical bore 26 is accompanied byagradual rise in pressure of the gases. The e ect produced by theVenturi tube is to promote the mixing of the air and gaseous fuel and todeliver to the burner channels a prop- 'er mixture of fuel and air forignition and consumption at the nozzles of the burner.

The illustrative burner is constructed to provide an augmented nozzleand consequent ame capacity, yet with conservation of space and properdistribution of the heating effect. The main body 12 of the burner isdivided by a longitudinal slot 38 extending parallel to and concentricwith the major longitudinal axis of the burner into two legs 39. Thesele s 39 are respectively located on opposite si es of the majorlongitudinal axis of the burner and may be connected at the extremeinner end of the burner body by a transverse connecting portion 40. Eachleg 39, as shown in Fig. 6,1s substantially rectangular in cross sectionand is provided with a longitudinal bore 41 for the flow of thecombustible mixture. As shown in Fig. 3, the bores or chambers 41 extendfroml the outlet 21 of the Venturi tube toward the extreme inner or'rear end 40 of the burner, on opposite sides of the longitudinal axisthereof.

Projecting into the top wall 42 of each of the gas assages 41 are gasnozzles 43, of any pre erred construction. As shown in Fig. 1, 'the gasnozzles 43 are arranged in parallel rows along the-legs 39 and extend 1nseries from the inlets of the receiving passages 41 to the extreme innerend 40 of the burner body. If desired, the nozzles of the two insiderows 44 may be arranged parallel with, but in staggered relationship to,the nozzles of the two outer rows 45. This arrangement promotesconservation of space, consistent with a maximum number of gas nozzlesleading from the gas passages 41.

The gas and air pass along the passages 41 and emergethrough the nozzles42, providing, after ignition, a multitude of 'ets arranged in rowsextending the entire istance of the legs 39 of the burner body.

As shown in Figs. 3 and 4, the inside vertical walls 46 of the gaspassages 41 converge at the inlets of the passageways 41 so as to calbore 26 and terminate forwardly of the apex 48 of the forwardlyconvergingv faces provided by the front terminals of the Walls 46 of thegas passages 41. This construction and arrangement provides adistributing chamber 50 located just beyond the outlet 21 of the Venturitube but just forwardly of the inlets of the gas passages 41.

v The outer vertical walls 51 and the top and bottom walls 52 and 53 ofthe gas passages 41 are continued forwardly of the burner body andextend substantially to the burner head 14. These walls provide gaspassages or channels 54 extending parallel with and on opposite sides ofthe central longitudinal axis of the Venturi tube, from the outlet 21thereof and forwardly of the burner body to a region adjacent to thehead 14 and in advance of the constriction 25 of the venturi. As shownin Figs. 2 and 3,the side portions of the walls of the Venturi tubeconstitute the inner walls of the channels or passages 54 vand areprovided with substantially plane,

vertical faces 55 to provide substantially vertical sides for saidchannels. As shown in Fig. 5, the other walls of the channels are madesimilarly plane on their inside faces to provide channels 54 which aresubstantially rectangular in cross section.

Projecting through the tops 52 of the channels on the opposite sides ofthe Venturi tube are series 56 of burner nozzles 42. These series 56 mabe arranged in longitudinal rows exten ing, if desired, as conltinuations of the outer rows 45 of burner noz- -wardly throu h thechannels or passageways 41 and is wi ely distributed into individualjets by the rows of nozzles 44 and 45. Other parts of the fuel streamsdiverted by the baille, provided b v the hereinbefore described walls47, pass forwardly through the chan- A nels 54 and are distributedsimilarly by the rows of nozzles 56 into a large number of flame jets onopposite sides cf the central Venturi tube, and substantially to thehead 14 of the burner body.

This construction provides 'adequate mixllO ing facilities for the fuelgas and air and et greatly augments the flame distribution throughoutthe burner body. In fact, substantially every part of the burner body isprovided with jets of flame. The-flame jets 011 the opposite sides ofthe Venturi tube serve alsoto heat the 'gaseous fuel and air as itpasses through the tube and thus assist the mixing operation. At' thesame time, this wide distributionI of the flame is attained withoutincreasing substantially the size of the burner body.

It is thought that the invention and many of `its attendant advantageswill be understood-from the foregoing description, and it will beapparent that various changes may be made in the form, construction andarrangement of the parts without departing `from the spirit and scope ofthe invention or sacrificing all of its material advantages', the formhereinbefore described being merelyv a preferred embodiment thereof.Moreover, itis not indispensable that all features of the invention beused conjointly, as they may be advantageously employed invarious-subcombinations and other combinations.

I claim l. A gaseous fuel burner, comprising an elongated body providedat one end with a Venturi tube extending inwardly of thebody from thegaseous fuel inlet to a distributing chamber located at the outlet oftheVenturi bore, said burner body having gas passages extendingrearwardly longitudinally from said distributing chamber on oppositesides of the longitudinal central axis of the body to the other endthereof, the inner vertical walls of sald passages converging toward theVenturi outlet and into said distributing chamber into an apexl toprovide baing means for dlviding the gas flow from the Venturi outlet,and said burner bodv also having gas passages extending forwardly fromsaid distributing chamber and beyond the constriction of the Venturibore, on each side of the longitudinal centrall axis of said Venturitube, and outside rows of fuel nozzles conV nectedwith said rearwardlyand forwardly extending gas passages and arranged therealong from therear to the front ends of the burner body, and inside rows of fuelnozzles connected with said rearwardlyY extending gas passages from thefront to the rear ends thereof. A

2. A gaseous fuel burner, comprising` an elongated body provided at oneend with a Venturi tube extending inwardly of thebody from a gaseousfuel inlet to a distributing chamber located at the outlet of theVenturi bore, said burner body having gas passages extending rearwardlyfrom said distributing chamber to the other endv ofthe body, the

`inner vvertical walls of -said passa s'being shapedfto provide balingArx'learis or dividing the gas iiow from the Venturi outlet, and saidburner body also having gas passages extending forwardly from saiddistributing-chamber and beyond the constriction of the Venturi bore,and rows of fuel nozzles connected with both said rearwardly andforwardly extending passages.

3. A gaseous 'fuel burner, comprising, a

burner`body, a Venturi tube extendingin- "to, the front end of theburner body, baflling means located within said distributing chamberfori' directing the gas flow into said passages, and series of fuelburner elements connected with each of said passages. `A

4. A gaseous fuel burner, comprising, va burner body, a Venturi tubeextending inwardly of the body from the fuel inlet end thereof, adistributing chamber located at the outlet of said Venturi tube, gas owpassages extending-on opposite sides of the burner body from saidvdistributing chamber to the rear end of said body,-and gas iow pas-Sages extending from said distributing chamber forwardly on each side ofsaid Venturi tube to the front end df the burner body.

-5. A gaseous fuel burner, comprising an elonoated burner bodyg'providedwith a central Ifuel feeding channel extending inwardly 'from the fuelinlet end ofthe body toward the rear end thereof, and two fuel feedingand distributing channels one arranged along veach side of said fuelfeeding channel and seplrated therefrom by a heat conducting wa 6. Agaseous fuel burner, comprising a burner body partitioned internally toprovide combustible mixture conducting and distributing passages, thetop of said burner consisting of a single continuous bounding wallprovided with nozzles communicating with said distributing passages andadapted i vto conduct heat directly to said conducting l passage. A

7. A gaseous fuel burner, comprising an elongated body generallyrectangular in cross-section and having an-upper bounding wall arrangedsubstantially in a horizontal 'plane and provided with nozzle outlets,side ing burning nozzles communicating with sald passages at saidVenturi inlet whereby to directly heat by conduction the mixture as itpasses through said inlet.

9. A gaseous fuel burner, comprising an elongated, generallyrectangular, body partitioned internally to provide a central'inletpassage for the combustible mixture, and side distributing passage-Waysseparated from said inlet passage by partitions extending from an end ofsaid burner part Way toward the opposite end.

10. A gaseous fuel burner, comprising an elongated, generallyrectangular, body partitioned internally to provide a central inletpassage for the combustible mixture, and side distributing passagewaysseparated from said inlet passage by partitlons extending from an end ofsaid burner part Way toward the opposite end, said body being providedWith nozzle outlets extending throughout its length.

CLAUDE M. DIBBLE.

